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Ar Niazi, F Koohsar, F Ghaffarifar, H Ziaei-Hezarjaribi,, F Mesgarian, on Jorjani,
Volume 8, Issue 2 (summer 2014[PERSIAN] 2014)
Abstract

Abstract Background and Objective: Culture, microscopic method is a gold standard method for identification of Lishmania parasite. The use of Molecular methods such as RT- PCR compared to microscopic methods has a higher sensitivity and specificity however, it is not widely used due to its expensive equipment and the time requested. The use of nucleic acid sequence based amplification (NASBA) method is highly valuable for diagnosis of live parasite because there is no need for to use Thermo cycler. We aimed to assess sensitivity and specificity of NASBA for molecular detection of cutaneous Leishmaniasis. Material and Methods: First, the RNA was extracted from 28 skin biopsies suspected cutaneous Leishmaniasis. Then, by means of specific primers designed for 18srRNA region, this region was amplified using NASBA isothemal amplification. To increase the sensitivity, the product was electroforesed in TBE (IX) buffer, using Syber Gold Flourecent probes. Using specific primers, RT- PCR was conducted on the samples too. Result: For diagnosis of Leishmania parasites, NASBA and RT-PCR had the sensitivity of 81% and 51%, respectively, and specificity of 100%. Conclusion: NASBA isothermal method with high sensitivity and specificity can be applied for identification of cutaneous leishmaniasis. Keywords: Cutaneous Leishmanisis, NASBA, 18S rRNA
Noori Noha Alsharifi , Mahin Gholipur , Somayeh Ghorbani , Fatemeh Mohammadzadeh , Safoura Khajeniazi ,
Volume 18, Issue 5 (Sep-Oct 2024)
Abstract

Background: Tumor necrosis factor alpha (TNFα) is a 17 kDa, an important soluble pro-inflammatory cytokine, which is involved in some tissue dysfunctions, including thyroid and liver tissue. In spite of its role in thyroid and tissue damage separately, the relationship between this factor and these two disorders has not been clarified. The aim of the present study was to evaluate liver biochemical parameters and TNFα in hypothyroid patients compared to euthyroid subjects.
Methods: To achieve this purpose, samples were transferred into tubes without anticoagulants and then centrifuged immediately to separate the serum. All markers in the serum were measured using commercial kits, including T3, T4, TSH, and TNFα, which were detected using the ELISA method. Liver function tests, including albumin, total bilirubin, and total protein were measured by spectroscopy and the colorimetric method, respectively. In addition, AST, ALT, ALP, and GGT were detected using enzymatic methods.
Results: Our results showed that the level of TNFα in hypothyroid patients was significantly higher than that in normal individuals (P = 0.009). TNFα had a significantly positive correlation with TSH and T3 but a negative correlation with T4. Furthermore, AST, ALT, and GGT had a positive correlation with TSH and a negative correlation with albumin, total protein, and total bilirubin. These correlations were insignificant (P < 0.05).
Conclusion: According to our data, the positive correlation of TSH with both TNFα and liver function tests may indicate a relationship between thyroid and liver function with each other.


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